Trying to Get Our Attention

We get lots of strange goings on in our flat that usually come in
waves. There will be nothing for a few months, then it all starts up
again. For the last two weeks we have been experiencing our lights
dimming and brightening, odd noises at night, and our home telephone
answering machine coming on with out receiving a call.

I got in from work last night feeling rather tired as I'd just worked
three nights and knowing that I had four more to go, I was feeling
irritable. Me and my partner got into bed and we were bickering about
something when we heard a loud bang coming from the kitchen that stopped
us immediately. My partner refused to go and have a look so as usual, I
got out of bed and went to investigate. It turns out that a tray had
somehow flown out from under the side and slapped into the middle of the
floor. I asked my partner if he had used a tray while I had been at work
and he said no, then rolled over and closed his eyes tightly to sleep
(chicken). As I sat here to type this a piece of A4 paper has just flown
off my bed and fallen at my feet. I'm not scared of this entity but I am
aware that it is trying to get our attention. We've just lost a close
friend who was only 24 years old and I am wondering if it is him, or the
resident ghost who was here before he passed.